The Mazon Speed Bowl was located on the old
Grundy County Fairgrounds, which was located in Mazon , Ill. , just north of the
old section of town, a few blocks northwest of the intersection of Illinois
Route 47 and Grand Ridge Road (North Street/Route 9). According to Mazon
historian Ron Kessler, a concrete walkway, that used to have several rows of
seats on it, is still there (2009). The concrete was about 10 – 12 feet wide
and ran the length of the south (main covered) grandstands.